1717. Maximum Score From Removing Substrings
You are given a string s and two integers x and y. You can perform two types of operations any number of times.
- Remove substring “ab” and gain x points.
- For example, when removing “ab” from “cabxbae” it becomes “cxbae”.
- Remove substring “ba” and gain y points.
- For example, when removing “ba” from “cabxbae” it becomes “cabxe”.
Return the maximum points you can gain after applying the above operations on s.
2345. Finding the Number of Visible Mountains
You are given a 0-indexed 2D integer array peaks where peaks[i] = [xi, yi] states that mountain i has a peak at coordinates (xi, yi). A mountain can be described as a right-angled isosceles triangle, with its base along the x-axis and a right angle at its peak. More formally, the gradients of ascending and descending the mountain are 1 and -1 respectively.
A mountain is considered visible if its peak does not lie within another mountain (including the border of other mountains).
Return the number of visible mountains.